diff --git a/README.md b/README.md
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--- a/README.md
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@@ -1,5 +1,5 @@
 <!-- # Anda Toshiki (安田俊樹) -->
-![header name badge](./assets/header-name-badge.png)
+![header name badge](./assets/header-name-badge-dark.png)
 ## 👋 ようこそ、Developers!
 
 <img src="https://cdn.jsdelivr.net/gh/andatoshiki/andatoshiki@master/assets/avatar.png" alt="logo" width="140" height="140" align="left" />
diff --git a/assets/header-name-badge-dark.png b/assets/header-name-badge-dark.png
new file mode 100644
index 0000000..328d8e9
Binary files /dev/null and b/assets/header-name-badge-dark.png differ